【单选题】【消耗次数：1】
口腔流行病学作用（）
①
了解和监测人群口腔疾病的分布状态
②
探索口腔疾病病因和影响流行的因素
③
研究口腔疾病防治措施并评价其效果
④
以上都是
参考答案：
复制
纠错
相关题目
【单选题】
为防止学龄前儿童发生口腔疾病，应避免的饮食习惯为:
①
注意限制那些多糖、多脂肪饮食
②
注意多吃容易产酸的食物
③
注意少吃口腔清除慢的食物
④
注意限制吃粘性大的食物
随机题目
【判断题】
阅读课文II. Department stores判断下列句子表述内容的正误:Without your receipt you can return any goods at the Customer Service Department.
①
正确
②
错误
【判断题】
阅读课文II.How to Improve Memory, 判断下列句子表述内容的正误:You can watch TV and memorize new words at the same time.
①
正确
②
错误
【多选题】
I shall never forget the days when I first ________________ Beijing.
①
set foot in
②
arrive at
③
arrived at
④
set out
【多选题】
When I got my first sight of the garden, its beauty____________took my breath away.
①
near
②
nearly
③
almost
④
hardly
【多选题】
The doctor is busy_______________ and cant speak to you.
①
at present
②
at all
③
right now
④
at last
【多选题】
I want to mail this letter to the U.S..___________ ?
①
How often do you hear from Mary
②
How many people are there in your family
③
How much is the postage
④
How much will it cost
【多选题】
A: Hey, taxi! Could you take me to the Friendship Hotel?B: _______________ .
①
Sure
②
Certainly
③
Of course
④
Here you are
【多选题】
A: Is he married?B:_________
①
No, he is not married.
②
No, he is still single.
③
No, he doesnt.
④
No, he didnt.
【单选题】
Department stores in London are very large. They are called department stores because they have many_________ departments.
①
delicious
②
different
③
domestic
④
delighted